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Recent contents Top users
  1. M

    Newbie help with an Alpha cb24x - overheat LED flashing

    Hi all, I have been searching for a solution to my problem, but to no real avail, so am posting hoping someone can help. I have an Alpha cb24x combi boiler, which for years worked with no problems. Initially when I moved in it was "on show" but about 4 years ago I had the kitchen refurbed and...
  2. P

    Alpha selling Dodgy boards

    Hi put i on post here a bit few weeks ago about a Alpha CB24 and was locking out on Pump fault or flow rate, it was driving me mad, the intial problem was that the boiler was not getting hot water, it came down to the P.C.B board so i replace it and all was fine, then i went away and an hour...
  3. K

    Alpha cb24x not firing

    Hi, went to a breakdown today, boiler has 240v and a flashing orange B every 2s, Hot water demand nothing no power to pump or fan, no ignition and the same with a heating call from the mechanical clock, suspected the clock may be faulty so I bridged the switch wire but still nothing, so...
  4. K

    Alpha cb24x not firing

    Hi, went to a breakdown today, boiler has 240v and a flashing orange B every 2s, Hot water demand nothing no power to pump or fan, no ignition and the same with a heating call from the mechanical clock, suspected the clock may be faulty so I bridged the switch wire but still nothing, so...
  5. F

    New alpha intec 28 PROBLEMS

    I got persuaded into fitting an ALPHA intec 28 ,by my local merchants , it's been in 5 months , it's already had a new pcb and new pump , is this a one off ? Or are alpha still as bad as they used to be!!
  6. M

    Alpha cb50

    Hi ive got an issue with an Alpha cb50, it keeps going to lock out when its been running and then needs to relight. if you manually reset it its ok again until next time. If you turn the temperature down and leave it on its fine, it will stay on all day and night. its only got a problem when its...
  7. P

    Alpha CB24

    Hi guys got a Alpha CB 24 saying there is a problem with the pump or restricted flow, pump seems fine, plate exchangers fine where else would you advise me to check, any one dealt with this problem before?
  8. Frelon

    Alpha 25C Heating Not Working

    Hi My daughter and her husband have just bought a house in Brighton in which the previous owner had installed an Alpha 25C boiler. The heating failed last week (hot water still available) and the engineer diagnosed a faulty diverter valve head because there was a slight leak from the diverter...
  9. Frelon

    Alpha Specialist Required in Brighton

    Hi My daughter and her husband have just bought a house in Brighton in which the previous owner had installed an Alpha 25C boiler........ The heating failed last week (hot water still available) and the engineer diagnosed a faulty diverter valve head because there was a slight leak from the...
  10. M

    Alpha Hot Water problem

    Hi I have an Alpha Cd32 Combi Sometimes it is not firing on hot water and there is a clicking noise coming from the pcb. When the boiler is set to CH the hot water works fine. I replaced the diaphram in the diverter valve 10 months ago and I have tested the flow switch which seems to be...
    • manxtapper
    • Thread
    • alpha hot water water
    • Replies: 4
    • Forum: Bathroom Advice
  11. D

    Replace alpha cb24 diverter valve or just the diaphram ?

    Hi all, just a quick question- Replace alpha cb24 diverter valve or just the diaphram? Thanks in advance Dave
  12. B

    alpha cdx

    have to get spares for this shed http://www.alpha-innovation.co.uk/custom/upload/instructions/CDX/CD25-28X%20Inst%20&%20Serv%20Inst%2001-11.pdf does anyone know if i can get a refurb kit for the diverter valve?
  13. D

    alpha cb he 33

    can i move pump head and change diaphram in situ
  14. B

    alpha 240

    got to look at one of these this wk not looking forward to it .customer phones saying it works fine just now and again it does not come on in the morning( approx 2 times a wk) i needd it fixing as going away for christmas and dont want house to freeze .unless it faults while i am there what...
  15. R

    Balancing radiators with an adaptive Grundfos Alpha pump

    As we have an Alpha pump that I understand changes it power as it detect changes in the resistance to flow (e.g TVRs closing) How do I stop the changes in pumping rate driving me round in a loop while balancing the radiators? Now that I have power flusher our system and got it a lot cleaner I...
  16. R

    Are there any issues with power flushing though a Grundfos ALPHA pump?

    In a few weeks’ time I am going to hire a power flushing machine. The best place to connect and use the machine is in our utility as it has water and drainage as well as the boiler with pipework that is easy to connect to. (And a tiled floor that leaks will not damage) Our system pump is a...
  17. H

    Problems with high pressure - Alpha HE CB25 boiler.

    Hi! I was hoping someone may be able to offer me some advice! The pressure gauge on my alpha he cb25 boiler was very high. I tried bleeding the radiators to no effect. Instructions on the boiler suggested reducing the amount of water inthe radiators. As I did this the pressure went down slowly...
    • Hels
    • Thread
    • alpha boiler high pressure
    • Replies: 3
    • Forum: Boilers
  18. T

    Alpha 240e DHW cutting out?

    Hi Al; I have a Alpha 240e combi in a bungalow. When I run the hot water into the sink next to the boiler it behaves fine. But if I try to run a bath in the bathroom about 15 feet away the boiler keeps going out then reigniting and trying again. We have to do get a hot bath out of it but have...
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